/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.streaming.connectors.elasticsearch.table;

import org.apache.flink.annotation.Internal;

import java.time.format.DateTimeFormatter;

/** Abstract class for time related {@link IndexGenerator}. */
@Internal
abstract class AbstractTimeIndexGenerator extends IndexGeneratorBase {

    private final String dateTimeFormat;
    protected transient DateTimeFormatter dateTimeFormatter;

    public AbstractTimeIndexGenerator(String index, String dateTimeFormat) {
        super(index);
        this.dateTimeFormat = dateTimeFormat;
    }

    @Override
    public void open() {
        this.dateTimeFormatter = DateTimeFormatter.ofPattern(dateTimeFormat);
    }
}
